Longitudinal and Vertical Coupled Dynamic Model and Power Characteristics of Tracked Vehicle

doi:10.3969/j.issn.1000-1093.2021.03.001

Abstract

Abstract: The dynamics of tracked vehicle in the off-road condition is the basis of the prediction of the off-road driving ability. A longitudinal and vertical coupled dynamic modeling method of tracked vehicle is presented，in which the coupling effect of longitudinal and vertical motion of high speed tracked vehicle is considered. A vehicle coupling dynamic model is established. The driving performance of vehicle on the typical road was simulated and verified in the real vehicle test. On this basis，the power flow characteristics of the tracked vehicle were analyzed. The simulated results indicate that the proposed model can be used to calculate the influence of the different road conditions on the vehicle driving performance. In the off-road condition，the road roughness makes the body vertical，pitching and other movements consume part of the power，and then have a certain impact on the speed of the vehicle. The instantaneous non-driving power of the tracked vehicle fluctuates widely. With the deterioration in the road conditions and the increase in speed，the ratio of non-driving power to total input power increases.The demand for the total power increases，which limits the effective use of the driving power.The results can be used for the dynamic model construction and the power flow analysis of high-speed tracked vehicles.

Key words: trackedvehicle, couplingdynamicmodel, longitudinalandverticalcoupling, powercharacteristics, off-roadcondition, powerflow

CLC Number:

TJ810.2

LI Chunming, WU Wei, GUO Zhiqiang, YUAN Shihua, CHEN Si. Longitudinal and Vertical Coupled Dynamic Model and Power Characteristics of Tracked Vehicle[J]. Acta Armamentarii, 2021, 42(3): 449-458.

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